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Tačna i približne metode proračuna spregnutih greda od čelika i betona

EXACT AND APPROXIMATE METHODS OF ANALYSIS OF STEEL-CONCRETE COMPOSITE BEAMS

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2019
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Authors
Kostić, Svetlana M.
Deretić-Stojanović, Biljana
Book part (Published version)
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Abstract
The paper presents four different methods for viscoelastic analysis of steel-concrete composite structures: “exact” analysis method, simplified method, effective modulus method and method proposed by the European design code, Eurocode 4. The exact analysis method uses the mathematical theory of linear integral operators for presenting viscoelastic relations of the steel-concrete composite structures. The simplified analysis method is derived from the exact method. It adopts the assumption that generalized displacements change linearly with the concrete creep function. Due to this assumption, the problem equations transforms from nonhomogeneous integral equations to nonhomogeneous algebraic equations. The effective modulus method and the method proposed by the Eurocode 4 are algebraic methods where stress-strain relations for concrete are expressed through the effective modulus, which depend on time. On the numerical example of continuous steel-concrete beam, the results obtained using ...the mentioned approximate and the exact method are compared

Keywords:
steel-concrete composite structures / viscoelastic analysis / concrete creep function / linear integral operators
Source:
Teorija građevinskih konstrukcija, 2019, 113-120
Publisher:
  • Univerzitet u Beogradu–Građevinski fakultet
  • Univerzitet Crne Gore–Građevinski fakultet
  • Akademija inženjerskih nauka Srbije
Projects:
  • Towards development of sustainable cities: influence of traffic induced vibrations on buildings and humans (RS-36046)

ISBN: 978-86-7518-208-5

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URI
https://grafar.grf.bg.ac.rs/handle/123456789/2127
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